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EP0165051A3 - Color display of related parameters - Google Patents

Color display of related parameters Download PDF

Info

Publication number
EP0165051A3
EP0165051A3 EP85304151A EP85304151A EP0165051A3 EP 0165051 A3 EP0165051 A3 EP 0165051A3 EP 85304151 A EP85304151 A EP 85304151A EP 85304151 A EP85304151 A EP 85304151A EP 0165051 A3 EP0165051 A3 EP 0165051A3
Authority
EP
European Patent Office
Prior art keywords
detector
signal
relative
display
amplitude
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85304151A
Other languages
German (de)
French (fr)
Other versions
EP0165051A2 (en
Inventor
Richard Hartley Mark, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of EP0165051A2 publication Critical patent/EP0165051A2/en
Publication of EP0165051A3 publication Critical patent/EP0165051A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9073—Recording measured data
    • G01N27/908—Recording measured data synchronously with scanning

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

A method and apparatus for producing a color strip display (18) of eddy current test data from a test signal produced by an eddy current detector (1) which varies in amplitude and in phase relative to a reference signal as the detector (1) is displaced along a test body. To produce the display (18), signals representative of the relative displace­ ment of the detector (1), signals representative of the amplitude o the detector signal, and signals representative of the relative phase shift of the detector signal from the reference signal are produced, for elected frequencies. The representative signals are processed and transmitted to a color display device (15) for producing a strip display (18) of the signal at each selected frequency. The single composite display produced for each frequency represents the relative displacement of the detector (1) along the body (2), the amplitude of the detector signal, and the relative phase of the detector signal depicted by a colored trace of the signal peak, the hue of which corresponds to the depth of the fault.
EP85304151A 1984-06-15 1985-06-12 Color display of related parameters Withdrawn EP0165051A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/621,003 US4644336A (en) 1984-06-15 1984-06-15 Color display of related parameters
US621003 1984-06-15

Publications (2)

Publication Number Publication Date
EP0165051A2 EP0165051A2 (en) 1985-12-18
EP0165051A3 true EP0165051A3 (en) 1988-12-07

Family

ID=24488332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85304151A Withdrawn EP0165051A3 (en) 1984-06-15 1985-06-12 Color display of related parameters

Country Status (5)

Country Link
US (1) US4644336A (en)
EP (1) EP0165051A3 (en)
JP (1) JPS6111654A (en)
KR (1) KR860000539A (en)
ES (1) ES8609737A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638936A1 (en) * 1986-11-14 1988-05-26 Kernforschungsz Karlsruhe METHOD AND DEVICE FOR DETECTING CORROSION OR THE LIKE
GB2224575B (en) * 1988-11-04 1993-07-14 Technical Software Consultants Electromagnetic microscope
JPH02246926A (en) * 1989-03-17 1990-10-02 Fujitsu Ltd System for displaying estimated current source
ES2080640B1 (en) * 1990-08-09 1997-04-16 Furuno Electric Co SUBMARINE WATER DETECTION SYSTEM.
DE69233065D1 (en) * 1991-06-11 2003-06-26 Newt Holdings Ltd probe
US6037768A (en) * 1997-04-02 2000-03-14 Iowa State University Research Foundation, Inc. Pulsed eddy current inspections and the calibration and display of inspection results
KR100364618B1 (en) * 1998-05-12 2002-12-16 가와사키 세이테츠 가부시키가이샤 Method and device for displaying signal generated by measurement probe
US7095410B2 (en) 1999-12-20 2006-08-22 O'connor Henry Moncrieff Method for generating and displaying complex data utilizing color-coded signals
JP2006284191A (en) * 2005-03-31 2006-10-19 Jfe Steel Kk Surface defect detection method using eddy current sensor
US8527216B2 (en) * 2009-07-24 2013-09-03 Areva Np Inc Eddy current for the characterization of broached tube support plate blockage
GB201110678D0 (en) * 2011-06-23 2011-08-10 Sarclad Ltd A method of detecting defects in a metallic surface
JP2011191326A (en) * 2011-07-08 2011-09-29 Jfe Steel Corp Method for detecting surface defect on plate using vortex sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475681A (en) * 1965-08-02 1969-10-28 Magnaflux Corp Apparatus display system for providing plural indications and threshold indications
US3895290A (en) * 1972-08-03 1975-07-15 Commissariat Energie Atomique Defect detection system using an AND gate to distinguish specific flaw parameters
DE2731054A1 (en) * 1977-07-07 1979-01-25 Martin Prof Dr Ing Lambeck Flaw detection system used for magnetic materials - involves Helmholtz coils to apply field and oscilloscope as indicator
JPS5830661A (en) * 1981-08-18 1983-02-23 Toshiba Corp Ultrasonic see-through device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434158A (en) * 1967-02-07 1969-03-18 Honeywell Inc Fiber optics cathode-ray tube recorder
US3596284A (en) * 1969-11-20 1971-07-27 Varian Associates Electrographic apparatus employing plural inkers of different colors for separating signal levels or channels according to color
US4026144A (en) * 1975-12-10 1977-05-31 The United States Of America As Represented By The Secretary Of The Army Apparatus for the generation of polychromatic ultrasonographs
US4188577A (en) * 1975-12-11 1980-02-12 Magnetic Analysis Corporation Pulse eddy current testing apparatus for magnetic materials, particularly tubes
US4194149A (en) * 1977-12-15 1980-03-18 The Babcock & Wilcox Company Method for generating the eddy current signature of a flaw in a tube proximate a contiguous member which obscures the flaw signal
US4210917A (en) * 1978-07-28 1980-07-01 Honeywell Inc. Multicolor multipoint recorder
US4480225A (en) * 1982-02-11 1984-10-30 The United States Of America As Represented By The United States Department Of Energy Improved multi-directional eddy current inspection test apparatus for detecting flaws in metal articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475681A (en) * 1965-08-02 1969-10-28 Magnaflux Corp Apparatus display system for providing plural indications and threshold indications
US3895290A (en) * 1972-08-03 1975-07-15 Commissariat Energie Atomique Defect detection system using an AND gate to distinguish specific flaw parameters
DE2731054A1 (en) * 1977-07-07 1979-01-25 Martin Prof Dr Ing Lambeck Flaw detection system used for magnetic materials - involves Helmholtz coils to apply field and oscilloscope as indicator
JPS5830661A (en) * 1981-08-18 1983-02-23 Toshiba Corp Ultrasonic see-through device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 109 (P-196)[1254], 12th May 1983; & JP-A-58 30 661 (TOKYO SHIBAURA DENKI K.K.) 23-02-1983 *

Also Published As

Publication number Publication date
KR860000539A (en) 1986-01-29
US4644336A (en) 1987-02-17
ES544165A0 (en) 1986-07-16
JPS6111654A (en) 1986-01-20
ES8609737A1 (en) 1986-07-16
EP0165051A2 (en) 1985-12-18

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18D Application deemed to be withdrawn

Effective date: 19890608

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARK, RICHARD HARTLEY, JR.